So many layers are now built on top of the OS that it seems the most obvious way it will continue to grow is by gradually subsiding abstraction layers above tha

So many layers are now built on top of the OS that it seems the most obvious way it will continue to grow is by gradually subsiding abstraction layers above that are so common, you'd never not want them. This has already happened with things like sound drivers, TCP/IP stacks, firewalling, etc. but will continue upward